
public class Customer {
    private int id;
    private String name;
    private int age;
    private String birthday;
    private String register_time;

    //无参构造器
    public Customer(){};
    //全参构造器
    public Customer(int id,String name,int age,String birthday,String register_time){
        this.id = id;
        this.name = name;
        this.age = age;
        this.birthday = birthday;
        this.register_time = register_time;
    }
    @Override
    public String toString(){
        return"Customer[id="+id+", name="+name+", age"+age+",birthday="+birthday+",register_time="+register_time+"]";
    }
}
